/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.czl.module_service.view;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;

import androidx.annotation.ColorInt;
import androidx.annotation.LayoutRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.StyleRes;
import androidx.appcompat.app.AppCompatDialog;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.view.AccessibilityDelegateCompat;
import androidx.core.view.ViewCompat;
import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;

import com.czl.module_service.R;

/**
 * Base class for {@link android.app.Dialog}s styled as a bottom sheet.
 */
public class BottomSheetDialog2 extends AppCompatDialog {

    private BottomSheetBehavior2<FrameLayout> behavior;

    private FrameLayout container;

    boolean dismissWithAnimation;

    boolean cancelable = true;
    private boolean canceledOnTouchOutside = true;
    private boolean canceledOnTouchOutsideSet;

    private float mDimAmount = 0.5f;
    private FrameLayout mBottomSheet;

    public BottomSheetDialog2(@NonNull Context context) {
        this(context, 0);
    }

    public BottomSheetDialog2(@NonNull Context context, @StyleRes int theme) {
        super(context, getThemeResId(context, theme));
        // We hide the title bar for any style configuration. Otherwise, there will be a gap
        // above the bottom sheet when it is expanded.
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
    }

    protected BottomSheetDialog2(
            @NonNull Context context, boolean cancelable, OnCancelListener cancelListener) {
        super(context, cancelable, cancelListener);
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
        this.cancelable = cancelable;
    }

    public void setDimAmount(float dimAmount) {
        mDimAmount = dimAmount;
    }

    public void setAllowDrag(boolean allowDrag) {
        getBehavior().setAllowDrag(allowDrag);
    }

    public void setCornerRadius(float value, @ColorInt int backgroundColor) {
        GradientDrawable drawable = new GradientDrawable();
        drawable.setCornerRadius(dp2px(getContext(), value));
        drawable.setColor(backgroundColor);
        if (mBottomSheet != null) {
            mBottomSheet.setBackground(drawable);
        }
    }


    @Override
    public void setContentView(@LayoutRes int layoutResId) {
        super.setContentView(wrapInBottomSheet(layoutResId, 0, null, null));
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Window window = getWindow();
        if (window != null) {
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
            if (mDimAmount >= 0) {
                window.setDimAmount(mDimAmount);
            }
        }
    }

    @Override
    public void setContentView(View view) {
        super.setContentView(wrapInBottomSheet(0, 0, view, null));
    }

    @Override
    public void setContentView(View view, ViewGroup.LayoutParams params) {
        super.setContentView(wrapInBottomSheet(0, 0, view, params));
    }

    @Override
    public void setCancelable(boolean cancelable) {
        super.setCancelable(cancelable);
        if (this.cancelable != cancelable) {
            this.cancelable = cancelable;
            if (behavior != null) {
                behavior.setHideable(cancelable);
            }
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        if (behavior != null && behavior.getState() == BottomSheetBehavior2.STATE_HIDDEN) {
            behavior.setState(BottomSheetBehavior2.STATE_COLLAPSED);
        }
    }

    /**
     * This function can be called from a few different use cases, including Swiping the dialog down
     * or calling `dismiss()` from a `BottomSheetDialogFragment`, tapping outside a dialog, etc...
     *
     * <p>The default animation to dismiss this dialog is a fade-out transition through a
     * windowAnimation. Call  if you want to utilize the
     * BottomSheet animation instead.
     *
     * <p>If this function is called from a swipe down interaction, or dismissWithAnimation is false,
     * then keep the default behavior.
     *
     * <p>Else, since this is a terminal event which will finish this dialog, we override the attached
     * {@link BottomSheetBehavior2.BottomSheetCallback} to call this function, after {@link
     * BottomSheetBehavior2#STATE_HIDDEN} is set. This will enforce the swipe down animation before
     * canceling this dialog.
     */
    @Override
    public void cancel() {
        BottomSheetBehavior2<FrameLayout> behavior = getBehavior();

        if (!dismissWithAnimation || behavior.getState() == BottomSheetBehavior2.STATE_HIDDEN) {
            super.cancel();
        } else {
            behavior.setState(BottomSheetBehavior2.STATE_HIDDEN);
        }
    }

    @Override
    public void setCanceledOnTouchOutside(boolean cancel) {
        super.setCanceledOnTouchOutside(cancel);
        if (cancel && !cancelable) {
            cancelable = true;
        }
        canceledOnTouchOutside = cancel;
        canceledOnTouchOutsideSet = true;
    }

    @NonNull
    public BottomSheetBehavior2<FrameLayout> getBehavior() {
        if (behavior == null) {
            // The content hasn't been set, so the behavior doesn't exist yet. Let's create it.
            ensureContainerAndBehavior();
        }
        return behavior;
    }

    /**
     * Set to perform the swipe down animation when dismissing instead of the window animation for the
     * dialog.
     *
     * @param dismissWithAnimation True if swipe down animation should be used when dismissing.
     */
    public void setDismissWithAnimation(boolean dismissWithAnimation) {
        this.dismissWithAnimation = dismissWithAnimation;
    }

    /**
     * Returns if dismissing will perform the swipe down animation on the bottom sheet, rather than
     * the window animation for the dialog.
     */
    public boolean getDismissWithAnimation() {
        return dismissWithAnimation;
    }

    /**
     * Creates the container layout which must exist to find the behavior
     */
    private void ensureContainerAndBehavior() {
        if (container == null) {
            container =
                    (FrameLayout) View.inflate(getContext(), R.layout.design_bottom_sheet_dialog2, null);

            mBottomSheet = container.findViewById(R.id.design_bottom_sheet);
            behavior = BottomSheetBehavior2.from(mBottomSheet);
            behavior.addBottomSheetCallback(bottomSheetCallback);
            behavior.setHideable(cancelable);

        }
    }

    @SuppressLint("ClickableViewAccessibility")
    private View wrapInBottomSheet(
            int layoutResId, int bottomLayoutId, @Nullable View view, @Nullable ViewGroup.LayoutParams params) {
        ensureContainerAndBehavior();
        CoordinatorLayout coordinator = container.findViewById(R.id.coordinator);
        if (layoutResId != 0 && view == null) {
            view = getLayoutInflater().inflate(layoutResId, coordinator, false);
        }

        if (bottomLayoutId != 0) {
            View bottomView = getLayoutInflater().inflate(bottomLayoutId, coordinator, false);
            FrameLayout bottomLayout = container.findViewById(R.id.container);
            bottomLayout.addView(bottomView);
            coordinator.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
                @Override
                public void onGlobalLayout() {
                    coordinator.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                    FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) coordinator.getLayoutParams();
                    layoutParams.setMargins(0, 240, 0, bottomView.getHeight());
                    coordinator.setLayoutParams(layoutParams);
                    ViewGroup.LayoutParams layoutParams1 = bottomLayout.getLayoutParams();
                    layoutParams1.height = bottomView.getHeight();
                    bottomLayout.setLayoutParams(layoutParams1);
                }
            });
        }

        FrameLayout bottomSheet = container.findViewById(R.id.design_bottom_sheet);
        bottomSheet.removeAllViews();
        if (params == null) {
            bottomSheet.addView(view);
        } else {
            bottomSheet.addView(view, params);
        }
        // We treat the CoordinatorLayout as outside the dialog though it is technically inside
        coordinator
                .findViewById(R.id.touch_outside)
                .setOnClickListener(
                        view12 -> {
                            if (cancelable && isShowing() && shouldWindowCloseOnTouchOutside()) {
                                cancel();
                            }
                        });
        // Handle accessibility events
        ViewCompat.setAccessibilityDelegate(
                bottomSheet,
                new AccessibilityDelegateCompat() {
                    @Override
                    public void onInitializeAccessibilityNodeInfo(
                            View host, @NonNull AccessibilityNodeInfoCompat info) {
                        super.onInitializeAccessibilityNodeInfo(host, info);
                        if (cancelable) {
                            info.addAction(AccessibilityNodeInfoCompat.ACTION_DISMISS);
                            info.setDismissable(true);
                        } else {
                            info.setDismissable(false);
                        }
                    }

                    @Override
                    public boolean performAccessibilityAction(View host, int action, Bundle args) {
                        if (action == AccessibilityNodeInfoCompat.ACTION_DISMISS && cancelable) {
                            cancel();
                            return true;
                        }
                        return super.performAccessibilityAction(host, action, args);
                    }
                });
        bottomSheet.setOnTouchListener(
                (view1, event) -> {
                    // Consume the event and prevent it from falling through
                    return true;
                });
        return container;
    }

    boolean shouldWindowCloseOnTouchOutside() {
        if (!canceledOnTouchOutsideSet) {
            TypedArray a =
                    getContext()
                            .obtainStyledAttributes(new int[]{android.R.attr.windowCloseOnTouchOutside});
            canceledOnTouchOutside = a.getBoolean(0, true);
            a.recycle();
            canceledOnTouchOutsideSet = true;
        }
        return canceledOnTouchOutside;
    }

    private static int getThemeResId(@NonNull Context context, int themeId) {
        if (themeId == 0) {
            // If the provided theme is 0, then retrieve the dialogTheme from our theme
            TypedValue outValue = new TypedValue();
            if (context.getTheme().resolveAttribute(R.attr.bottomSheetDialogTheme, outValue, true)) {
                themeId = outValue.resourceId;
            } else {
                // bottomSheetDialogTheme is not provided; we default to our light theme
                themeId = R.style.Theme_Design_Light_BottomSheetDialog;
            }
        }
        return themeId;
    }

    public void removeDefaultCallback() {
        behavior.removeBottomSheetCallback(bottomSheetCallback);
    }

    @NonNull
    private final BottomSheetBehavior2.BottomSheetCallback bottomSheetCallback =
            new BottomSheetBehavior2.BottomSheetCallback() {
                @Override
                public void onStateChanged(
                        @NonNull View bottomSheet, @BottomSheetBehavior2.State int newState) {
                    if (newState == BottomSheetBehavior2.STATE_HIDDEN) {
                        cancel();
                    }
                }

                @Override
                public void onSlide(@NonNull View bottomSheet, float slideOffset) {
                    int top = bottomSheet.getTop();
                    int parentHeight = getBehavior().parentHeight;
                    int collapsedOffset = getBehavior().collapsedOffset;
                    if (mDimAmount < 0) {
                        return;
                    }
                    float offset = (parentHeight - top) / (float) (parentHeight - collapsedOffset);
                    if (offset > 1) {
                        return;
                    }
                    float scale = mDimAmount * (offset);
                    if (scale < 0f) {
                        scale = 0;
                    }
                    if (getWindow() != null) {
                        getWindow().setDimAmount(scale);
                    }
                }
            };

    public static int dp2px(Context context, float value) {
        return (int) (TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value, context.getResources().getDisplayMetrics()) + 0.5f);
    }
}
